Lock-bolt.



3A. ARENS.

LUCK BOLT. PPu'CATwN FILEDFYEB. 3, 1914.

Eifltented May 18, 1915.

IN V EN TOR.

WITNESSES haw UNH"

snares earner orator...

AUGUST ARENS, 0F NE! BRITAIN, CONNECTICUT, ASSIGNOR TO THE AMERICANHARDWARE CORPORATION, OF NEW BRITAIN, CONIJEC'IICUT, A CORPORATION OFCONNECTICUT.

Loon-BOLT.

- Patented May 18, 35.93.55.

Application filed February 3, 1914. Serial No. 816,208.

To all whom it may concern: I 1

Be it known that I, Anocsr ARENS, a citizen of the United States, and aresident of New Britain, in the county of Hartford and State ofConnecticut, have invented certain new and useful Improvements inLock-Bolts, of which the following is a specification.

This invention relates generally to a device for securing a lock bolt inits retracted position while a door is open, and for re leasing' thatlock bolt when the door is' closed. v

' It is particularly adapted for-use in connection with what are knownas anti-panic door fixtures such as are used in schools, theaters andother p'ublic buildings. These structures comprise a bolt at the top andbottom of a door, the bolts being connected by a rod, and an operatingmechanism being connected with the'rod and arranged trans verscly of thedoor at a point where it will receive the pressure of a body forcedagainst the door, pressure on this operating mechanism rotating the rodand retracting, the bolts. There are various methods of operating, thebolts in fixtures of this sort, and my invention is not concerned withthe details of such mechanism.

Heretofore the constructions have been such that as soon as adoor isopened and pressure on the operating; mechanism is released, the boltsinnnedlately resume. their normal proJected positlon, with the resultthat the bolt at the bottom of the door often drags along the floor,wearing either the It is the particularpurpose ofthis invention, asabove stated, to hold the bolts retracted even after pressure on theoperating mechanism is released, thus preventing the wear of the flooror the bolt, or both, the bolts being released when the door closes, tolock the door in position.

In the drawings-l igure 1 is a general view showing the application ofan antip'anic fixture to a pairof doors. Fig. 2 is a detail view of theupper bolt showing the releasing mechanism. Fig. 3 is a rear View of theupper bolt. Fig. 4 is a side View of the same, but with the casingbroken away to show the manner of holding the bolt' in retractedposition. Fig. 5 is a sec (3 is a detail view of an adjustable doorstopto correctly position the bolts with respect to their keepers.

Referring to the drawings, A, B, denote a pair of doors equipped withthe antipanic fixtures, the door A being equipped '60 ope 'ating member4 is connected with it.

This operating member 4 is so supported that pressure against it willcause it to a swing to one side, rotating the rod 3 and with it thebolts. p

By reference to Figs. 2, 3, 4 and 5, th construction and arrangementpt,the bolts and their operating mechanism 'wdll 'be clearly seen. Theupper and lower bolts ,75 are the same except that the device forholding the belts in retracted position is associated only with theupper bolt, and of course the releasing, mechanism is arranged inoperative relation thereto. 10 denotes the bolt casing, which as shownis adapted to be secured to the face of the cud of the rod 3, and asimilar squared pocket at its inner end to take the squared shank of thebolt 12.

13 is a spring connected at one end to the using, and at its other endto the actuator', and tends to rotate the actuator to return it to itsnormal position after it has been moved by the operating member 4.through the rod 3. The inside of the casiug has au inclined track 14which is en caged by a roller 15 on the bolt, and as the bolt is turnedby the actuator 11 this roller 15, riding down .the inclined track 14,retracts the bolt to the position. shown in Fig. l, the bolt moving:longitudinally with respect to the actuator If, the socket in its innercnd being deep enough to permit of this. A spring 16 coiled about the.shankof the bolt and bcaringht one end against the actuator and at theother end against the head of the bolt, tends to push the bolt out toits projected position, indicated in Figs. 2 and 3. 17 is a stop on thebolt to limit itb rotary motion with the actuator 11 under the influenceof the spring 13, bringing it always to correct locking position. v v

The bolt carries a spring pressed detent 20 which is'pr'ojected into asocket 21 in the cas-.

ward bytbe spring 245 Secured to the door casing in an operativeposition with relation to this plunger 22, is an adjustable stop 25, andas the door closes this plunger, coming iii contact with this stop, isforced inwardly, pnssing inthe spring detent 20, releasing the bolts,and. the spring 13 rotates the bolt actuator and the rod 3, and restoresthe operating member 4 to normal position, the spring 16 projecting thebolts into their keepers, the parts then assuming the position shown inFigs. 2, 3 and 5. It is thought that from the foregoing description theoperation of the device will be clearly understood. it is apparent thatthe invention is not concerned with the specific type or form of boltactuator which is used, but is concerned primarily with means forholding the bolts in retracted position, and

of automatically releasing the bolts when. the door is closed. It iscustomary to provide the doors with self-closing attachments, forinstance devices such as are known as door checks.

lit is to be understood that I have selected merely one embodiment ofthe invention for the purpose of illustration and description, and I amaware that this embodiment is susceptible of various changes andmodifications without departing from the spirit of the invention asdefined in the appended dmms I I claim as my invention 1. A bolt casing,a bolt therein, means for moving said bolt rotarily, means for movingsaid bolt longitudinally, interengaging means on said bolt and casing toretain said bolt when it has reached the limit of its combined rotaryand longitudinal motion in one direction, and releasing means for saidretainer.

2. in a device of the character described, a bolt casing, bolt mountedtherein and adapted for a combined rotary and longitudinal motion withinsaid casing, intercngaging means on said bolt and casing for boldingsaid bolt in its retracted position, and

automatic means for releasingsaid bolt.

of locking position, a spring detent carried by said bolt and adapted tointerlock with said casing when the bolt is in retracted position, andmeans for actuating said detent to releasesaid bolt.

5. The combination with a door of looking devices therefor at its upperand lower edges, comprising casings, lock bolts therein, a rodoperatively connecting said bolts, and means for turning .said rod,means for causing the longitudinal movement of said bolts to retractedposition upon the rotation of said rod in one direction, means forholding said bolts in retracted position, means operable upon theclosing of the door to release said bolts, and means for moving saidbolts into locking position when released.

6. The combination with a door, of looking devices therefor at its upperand lower edges, comprising casings, lock bolts therein, a rodoperatively connecting said bolts, and means for turning said rod, meansfor causing the longitudinal movement of said bolts to retractedposition upon the rotation of said rod in one direction, means forholding said bolts in retracted position, an adjustable stop mounted inthedoor frame and op-- erable upon the closing ofothe door to releasesaid bolts, and means for moving said bolts to locking position whenrelased.

7. The combination with a door, of lookingdevices therefor at its upperand lower edges, comprising casings, lock bolts therein,

a rod operatively connecting said bolts, and

means for turning said rod, means for causing the longitudinal movementof said bolts to retracted position upon the rotation of said rod in onedirection, a spring pressed dctent' carried by one of said bolts andadapted to interlookwith said casing when the bolts are in retractedposition, a plunger;

operatively arranged with relation to said detent, and an adjustablestop mounted in the door frame and adapted to actuate said plunger torelease said detent when the door is closed.

I AUGUST ARENS. Witnesses:

C. A. PARKER, F. B. CAswELL.

